#include <stdio.h>
#include <string.h>

#define DEBUG
    #define MESSAGE "Jack_Tang"
#ifndef DEBUG
#endif

#define PASTER(x)   printf("x = %d\n", paste##x)

int main(void)
{
    int paste1 = 58;

    PASTER(1);

    #ifdef DEBUG
        printf("DEBUG is defined:%s\n", MESSAGE);
    #endif

    return 0;
}